General

  • Target

    sigiemka.exe

  • Size

    33KB

  • Sample

    240829-qc3ydashle

  • MD5

    501167f3c821673f624af5cbf7e7fe60

  • SHA1

    8dcf8fb0f71e9264a4fc28bada9b7627827948b9

  • SHA256

    a0e629e2a5ad3dd0b5f4926ddd45fed6b5b07bd33fc90abb6f2d4ac3c573a055

  • SHA512

    3b7826ef2592f9c33d613b3988a0b05d83779f693fcab4bd37e846e5d57d0f5ba02a91afc6c3e721cdc56e61fb470a4f34d247def4f697f9cf4a697bd2079bae

  • SSDEEP

    384:il+PkjD9+E5MFs7iui8L7znM42pfL3iB7OxVqWYRApkFXBLTsOZwpGN2v99Ikuiz:K+CD93W03M42JiB706VF49j1OjhBbW

Malware Config

Extracted

Family

xworm

Version

5.0

C2

lefferek-42016.portmap.host:42016

Mutex

IwOvHxuUoVPxFI5S

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target

      sigiemka.exe

    • Size

      33KB

    • MD5

      501167f3c821673f624af5cbf7e7fe60

    • SHA1

      8dcf8fb0f71e9264a4fc28bada9b7627827948b9

    • SHA256

      a0e629e2a5ad3dd0b5f4926ddd45fed6b5b07bd33fc90abb6f2d4ac3c573a055

    • SHA512

      3b7826ef2592f9c33d613b3988a0b05d83779f693fcab4bd37e846e5d57d0f5ba02a91afc6c3e721cdc56e61fb470a4f34d247def4f697f9cf4a697bd2079bae

    • SSDEEP

      384:il+PkjD9+E5MFs7iui8L7znM42pfL3iB7OxVqWYRApkFXBLTsOZwpGN2v99Ikuiz:K+CD93W03M42JiB706VF49j1OjhBbW

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • XenArmor Suite

      XenArmor is as suite of password recovery tools for various application.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Disables Task Manager via registry modification

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses Microsoft Outlook accounts

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks